73977223860 has 288 divisors, whose sum is σ = 241257848832. Its totient is φ = 19008120960.

The previous prime is 73977223849. The next prime is 73977223867. The reversal of 73977223860 is 6832277937.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 73977223797 and 73977223806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73977223867) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 39622647 + ... + 39624513.

It is an arithmetic number, because the mean of its divisors is an integer number (837700864).

Almost surely, 2^73977223860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73977223860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120628924416).

73977223860 is an abundant number, since it is smaller than the sum of its proper divisors (167280624972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73977223860 is a wasteful number, since it uses less digits than its factorization.

73977223860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2185 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 54.

The spelling of 73977223860 in words is "seventy-three billion, nine hundred seventy-seven million, two hundred twenty-three thousand, eight hundred sixty".